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| U.S. Isobutane-Isobutylene Stocks at Bulk Terminals (Thousand Barrels) | ||||||||
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1993 | 6,206 | 5,881 | 6,067 | 5,998 | 7,195 | 7,904 | 7,848 | 7,247 | 7,995 | 7,788 | 6,533 | 5,707 |
| 1994 | 5,810 | 6,286 | 6,050 | 5,723 | 5,540 | 5,477 | 4,444 | 5,085 | 6,183 | 5,912 | 4,707 | 3,727 |
| 1995 | 3,807 | 3,282 | 2,681 | 3,554 | 4,412 | 4,480 | 5,331 | 5,342 | 4,054 | 3,563 | 3,037 | 2,689 |
| 1996 | 2,178 | 1,928 | 2,210 | 2,463 | 2,499 | 2,820 | 3,800 | 4,458 | 3,791 | 4,345 | 3,520 | 3,360 |
| 1997 | 3,168 | 2,205 | 2,154 | 2,444 | 3,026 | 3,321 | 3,910 | 4,209 | 4,432 | 4,103 | 3,708 | 3,513 |
| 1998 | 3,569 | 3,488 | 3,712 | 3,573 | 3,961 | 3,889 | 3,694 | 4,055 | 4,268 | 3,708 | 3,264 | 2,465 |
| 1999 | 2,290 | 2,237 | 2,312 | 2,887 | 3,168 | 3,346 | 3,096 | 3,018 | 3,024 | 2,994 | 2,565 | 2,337 |
| 2000 | 1,999 | 1,839 | 1,722 | 1,812 | 2,000 | 2,627 | 3,416 | 3,415 | 3,086 | 2,559 | 2,457 | 2,248 |
| 2001 | 2,050 | 1,864 | 2,144 | 2,086 | 2,910 | 3,112 | 2,610 | 3,024 | 2,664 | 2,522 | 2,328 | 1,987 |
| 2002 | 2,054 | 2,379 | 2,516 | 2,910 | 3,006 | 2,692 | 2,464 | 2,727 | 2,628 | 3,075 | 2,498 | 2,204 |
| 2003 | 1,956 | 1,606 | 1,358 | 1,480 | 2,004 | 2,632 | 2,717 | 2,682 | 3,193 | 3,869 | 2,806 | 2,187 |
| 2004 | 1,795 | 1,567 | 2,189 | 2,092 | 1,957 | 1,698 | 2,432 | 2,794 | 3,251 | 2,008 | 2,037 | 1,859 |
| 2005 | 1,977 | 2,247 | 1,949 | 2,514 | 3,075 | 2,646 | 2,819 | 3,395 | 3,110 | 2,970 | 3,087 | 2,636 |
| 2006 | 2,291 | 2,495 | 2,657 | 2,919 | 3,729 | 3,461 | 3,180 | 2,937 | 3,467 | 3,528 | 3,348 | 2,293 |
| 2007 | 2,088 | 2,632 | 3,128 | 3,659 | 4,211 | 4,162 | 4,186 | 4,024 | 3,947 | 4,211 | 3,675 | 2,712 |
| 2008 | 2,549 | 2,682 | 2,776 | 3,625 | 3,890 | 3,762 | 3,663 | 4,386 | 4,951 | 4,210 | 3,372 | 2,994 |
| 2009 | 3,153 | 3,289 | 3,031 | 2,792 | 3,102 | 2,931 | 3,050 | 2,650 | 2,805 | 3,368 | 2,983 | 2,801 |
| 2010 | 2,933 | 3,197 | 3,141 | 2,750 | 2,962 | 3,290 | 3,405 | 3,589 | 4,174 | 4,682 | 3,529 | 3,061 |
| 2011 | 2,932 | 2,454 | 2,750 | 2,925 | 3,643 | 3,745 | 3,306 | 2,604 | 2,451 | 2,632 | 2,912 | 3,515 |
| 2012 | 3,475 | 3,294 | 3,894 | 4,259 | 3,909 | 3,581 | 3,852 | 3,796 | 3,763 | 4,341 | 4,605 | 4,082 |
| 2013 | 3,760 | 4,173 | 4,636 | 5,957 | 6,187 | 5,398 | 5,634 | 5,873 | 6,269 | 4,603 | 4,174 | 3,807 |
| 2014 | 3,398 | 3,252 | 3,190 | 3,139 | 2,845 | 3,637 | 4,042 | 5,039 | 4,878 | 4,886 | 4,872 | 4,518 |
| 2015 | 3,856 | 3,433 | 3,921 | 4,369 | 5,086 | 5,164 | 5,710 | 5,045 | 5,138 | 5,216 | 4,868 | 4,398 |
| 2016 | 3,880 | 4,350 | 4,540 | 4,237 | 4,244 | 4,128 | 3,793 | 4,059 | 3,978 | 3,552 | 2,856 | 3,338 |
| 2017 | 2,823 | 3,171 | 3,641 | 3,952 | 4,425 | 4,622 | 4,053 | 4,130 | 5,598 | 5,684 | 4,794 | 3,714 |
| 2018 | 3,684 | 3,419 | 3,606 | 4,012 | 3,617 | 4,230 | 4,956 | 4,885 | 5,177 | 4,790 | 4,214 | 4,252 |
| 2019 | 4,771 | 4,754 | 5,375 | 6,444 | 6,852 | 6,423 | 6,235 | 6,416 | 6,266 | 5,939 | 6,166 | 6,251 |
| 2020 | 5,284 | 6,189 | 7,247 | 8,753 | 8,099 | 6,992 | 7,337 | 8,526 | 8,784 | 8,218 | 7,940 | 7,390 |
| 2021 | 6,469 | 6,302 | 6,463 | 6,436 | 5,057 | 4,964 | 5,647 | 5,885 | 6,001 | 7,354 | 6,928 | 4,908 |
| 2022 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2023 | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- |
| 2024 | -- | |||||||||||
| - = No Data Reported; -- = Not Applicable; NA = Not Available; W = Withheld to avoid disclosure of individual company data. |
| Release Date: 3/29/2024 |
| Next Release Date: 4/30/2024 |